Wisconsin frog calling forecast
Enter a Wisconsin location for a 14-day frog calling forecast — frogs of Wisconsin, spring big night timing, and amphibian migration phenology powered by Open-Meteo and 44 years of WFTS data.
Frog calls of Wisconsin
All 12 Wisconsin frog and toad species — tap a card to expand and play individual and chorus frog calls of Wisconsin species.
Frogs of Wisconsin
Wisconsin hosts twelve frog and toad species on the Wisconsin Frog & Toad Survey. Frog Night Mobile brings you a calling forecast and authentic frog calls of Wisconsin for every species.
Big night & amphibian migration
Spring big night events — warm, rainy nights when frogs and salamanders migrate to wetlands — kick off the breeding season. Wood frogs and spring peepers are often first. Use the forecast to find nights when species are likely calling near you.
The Data
The Wisconsin Frog & Toad Survey (WFTS) has been collecting data since 1981, making it one of the longest-running amphibian monitoring programs in North America.
How It Works
The forecaster fetches 14-day weather from Open-Meteo for any Wisconsin location. It combines nightly temperature, precipitation, wind, and humidity with species-specific phenology models to estimate a Call Index (0–3).
Credits
Frog Night — Conceptualized, Engineered, and Designed by Oliver Franklin Anderson.
Full desktop experience
Atlas maps, calendar playback, season comparison, and the ear-training quiz are available on the full desktop site.
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Volunteer for the Wisconsin Frog and Toad Survey.
Wisconsin Frog & Toad Survey →